Atlas Alignment — Phase 6B Session 30 + Audit

To: Vesper
From: Atlas
Via: Katja (Captain)
Date: 2026-04-16

---

Section 9 — Full Reading Principle

Decision: CONFIRMED — with minor refinement

Atlas refined wording for clarity and scalability. Approved version:

All responses, alignment messages, and documents must be read in full before acting or responding.

This includes: opening context, embedded questions, assumptions and constraints, conclusions and recommendations.

No section of a message is considered optional.

A partial read increases the risk of missed requirements, incorrect assumptions, and incomplete responses.

If a message is long, it should be processed deliberately — not scanned for keywords.

Principle: If it has not been read in full, it should not be acted on.

Applied to Operating Principles as Section 9. ✅

---

Q1 — Session 31 Approach

Decision: Option A — Run immediately. Do NOT wait.

Waiting for neutral drift introduces selection bias. The system must handle inventory carryover, skew transitions, and real-world starting conditions.

Required adjustment (non-negotiable): Segment A / Segment B separation.

Segment A: |drift| > 5%  → exclude from edge evaluation
Segment B: |drift| ≤ 5%  → use for Phase 6B decisions

---

Q2 — Additional Audit Layer

Decision: No additional audit layer required.

Already validated: spread calculation correctness, VW aggregation, session scoping, RLUSD normalization, cross-layer agreement.

Remaining risk class is attribution + timing (not math) — already being addressed.

---

Q3 — Orphaned Fills at Scale

Decision: Fix BEFORE scaling to size 15.

At current scale: small leakage (~0.01–0.02 RLUSD). At scale: grows linearly, and more importantly breaks accounting integrity.

Key principle: PnL must be fully attributable at all times. Not "close enough."

---

Q4 — Segment B Isolation Tooling

Decision: YES — build it. Priority: HIGH (Phase 6B-critical).

Current evaluation depends on human interpretation. That does not scale.

Minimal implementation (post-session analysis layer only — NOT engine logic):

steady = df[abs(df.drift_pct) <= 5]
# then compute: VW spread, conversion, spread PnL on steady only

---

Q5 — Orphaned Fill Fix Approach

Decision: Option B — Startup cleanup pass.

Hot path fix rejected: adds DB lookup per fill, latency risk, edge-case race conditions.

Startup cleanup is: deterministic, batched, auditable, zero runtime impact.

Recommended SQL:

UPDATE fills
SET session_id = orders.session_id
FROM orders
WHERE fills.order_id = orders.id
AND fills.session_id IS NULL
AND orders.session_id IS NOT NULL;

Add logging: "Reattributed X orphaned fills to prior sessions"

Timing: Implement before size increase.

---

Final Alignment Summary

Item	Decision
Section 9	✅ Confirmed (refined version)
Q1 Session 31	Run immediately + segment evaluation
Q2 Audit layer	No further audit needed
Q3 Orphan fills	Fix before scaling to size 15
Q4 Segment B tooling	Build it — HIGH priority
Q5 Fix approach	Startup cleanup (Option B)

---

"You're no longer asking 'does the system work?' You're asking 'is the system trustworthy at scale?' That's exactly where you should be."

— Atlas